Gee, this is an old thread. I had to read what I had told you first. I still have mine. I've never used The RCA 5751 triple mica. My favorite is the Sylvania, but they are becoming near impossible to find, and are pushing $100. I think I know where you can get some, but you will have to contact me privately.
I recently bought some much cheaper Electro Harmonix 12AX7 tubes to try on some one's recommendation. the mids were great, but it didn't have the extension of the 5751. There was hardly any difference in perceived loudness between the two.
I recently bought some much cheaper Electro Harmonix 12AX7 tubes to try on some one's recommendation. the mids were great, but it didn't have the extension of the 5751. There was hardly any difference in perceived loudness between the two.